Wind turbine power phase control with DC collection bus for onshore/offshore windfarms
| DWPI Title: Onshore/offshore wind farm, has direct current collection bus for collecting time-delayed direct current generated by wind turbines that are phased over total phase delay time of wind turbines, and energy storage system for regulating voltage |
| Abstract: A DC bus collection system for a wind farm reduces the overall required number of converters and minimizes the energy storage system requirements. The DC bus collection system implements a power phasing control method between wind turbines that filters the variations and improves power quality. The phasing control method takes advantage of a novel power packet network concept with nonlinear power flow control design techniques that guarantees both stable and enhanced dynamic performance. |
| Use: Wind farm i.e. onshore/offshore wind farm for use with mechanical-electrical wind turbine. Can also be used for a marine wind farm, a stationary wind farm and a stationary solar farm. |
| Advantage: The farm reduces number of converters and improves power quality to the grid yields a substantial cost savings to the wind farm owner/operator, controls phase by selecting a delay time for each of the wind turbines to minimize the energy storage capacity required for the DC collection bus to maintain a constant voltage. |
| Novelty: The farm (20) has a set of wind turbines (10) fixed with a rotor for capturing wind energy and converting the wind energy into a rotary motion. An electrical induction machine (13) converts the motion to an alternating current (AC). An AC/direct current (DC) converter (14) converts the AC to DC. A controller controls an individual time delay of the DC from the wind turbine. A DC collection bus (25) collects the time-delayed DC generated by each of the wind turbines that are phased over a total phase delay time of the turbines. An energy storage system regulates a voltage of the collection bus. |
| Filed: 3/2/2022 |
| Application Number: US17684665A |
| Tech ID: SD 15895.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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